"Hatano said that helping to sell Dragon Quest IX outside Japan is part of a larger effort on the part of Nintendo to partner with software makers to sell their games for Nintendo hardware," GameLife summarized. Maybe eventually, Square Enix will announce this game.
Also on the subject of Dragon Quest IX, at the same event, Shigeru Miyamoto praised DQIX's communication mode, which allows players to collect and interact with others' characters passively. "Dragon Quest IX's passerby communication has caused the number of people walking around outside using their DS systems to increase greatly, and I'm thinking that I could probably make something unique like that," he said. And then he said "Also, recently, we got a cat." Hint, hint.